I was looking for somewhere to store a room's worth of documents for a couple of months and after getting ridiculous quotes from the Woolwich Access (£70 a month!!) I found Lovespace. Pretty simple concept; you go online, order some boxes (I initially ordered 2 but they sent me a third just in case - they were right!!) they deliver boxes and tape, I filled them up then choose a time for them to pick up. They are charging me £5 a month per box I store - so £15 is a lot cheaper than other places I tried.
Theres a cool feature on the website where you can take a picture of whats in the box and upload it so when I want to get them back i just click on the box of stuff you want and they'll send it back next day.
Final word, the customer service was excellent, I had a few weird questions (can you pick up on a Saturday? yes they can) and they're response was really helpful.
I could definitely see myself using this service again, the reason I wrote this review is because I saw nobody had written about it yet - but I think what a useful product so I'm sure others could make use of it too!!!